Device for sharpening stone-cutting tools



(No Model.)

E. ENGLAND.

DEVICE` POR SHARPBNING STONE GUTTIG TGOLVS.

No. 393,300. Patented Nov. 20, 1888.

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'NITED STATES PATENT Fries.

EDVARD ENGLAND, OF DULUTH, MINNESOTA.

SPECIFICATION forming part of Letters Patent No. 393,300, dated November 20, 1888.

(No model.)

T0 @ZZ whom, it may concern:

Be it known that I, EDWARD ENG LAND, a citizen of the United States, residing at Du luth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements lfor Cutting and Sharpening Stone-Cutters Tootl1-Gliisels, Toot,li-AXes,aud for Gumming Saws and Punching Holes iu Metals; and I do hercbydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements forcutting and sharpening stonecutters toothchisels, .tooth-axes, &e., for gumming saws, and for punching holes in metals, dre.

In the accompanying drawings, which fully illustrate my invention, Figure l is a perspective of my machine. Fig. 2 is a plan of the bed-dic; and Figs. 3, 4, 5, and 6 are details of separate parts, hereinafter described.

In the description like letters indicate like parts. Y

My invention consists, essentially, in the combination of the .movable and upright shaft A; the shank or chuck 3, which is fastened into the upright shaft A; the cutter or punch C; the throat-plate D,which is firmly secured to the underjaw, G, and forms a guide to the shank or chuck B through the throat E; the lever F, its short arm passing into the mortise or slot in the square head of the upright shaft A, its long arm being connected with and forming acompound lever to be operated by the foot or other mechanical device; the fulcrum K; the guide II, which is secured to the ledge ot' the throat-plate D by a thumbscrew and moves in and out from the ledge to regulate the length of the teeth; the gage I, also secured to the ledge of the throat-plate by a thumb-screw, and can be moved from right to left or left to right to regulate the width of the teeth, all operating together, as and for the purposes shown.

The upright shaft A is held firmly in place to the end of the upper jaw, G, by means of the plates L and L and the bolts M and M', and moves freely up and down through the box formed by the plates on the movement of the lever F. The underjaw stands upon and is securely fastened to a bench or table.

The upright shaft A is moved by means of the compound lever operated by the foot or other mechanical power applied to the lever.

To operate my device, the guide and gage having been first adjusted to rcgulate'the size ofthe teeth, the edge ofthe chisel or otherinstrument to be cut or sharpened first having been heated red hot is held against the ledge of the throat plate D, as directed by the guide, when the lever is pressed down bythe foot of the operator,thus carrying the upright shaft downward, the cutter or punch doing its Work. 'The operation is repeated as often as required, the chisel or otherinstru ment being moved laterally until the cuttingis completed.

For gumming saws or for punching holes in metals, 85e., the proper size cutter or punch having been properly adjusted, the operation is performed with facility in the manner already described.

IIaving fully described my invention,what I claim as new s- 1. In a machine for sharpening or cutting stone-cutters7 toothchisels, tooth-axes, Ste., the combination of the upright shaft A, the shank or chuck B, the cutter or punch C, the throat-plate D, the rigid jaws G, the lever F, and the fulcrum K, as and for the purposes substautiall y as described.

2. The combination of the open and rigid jaws G, the upright shaft A, moving freely through the box formed by the plates L and L and secured to the upperjaw by the bolts M and M, the square head and mortise or slot with the short arm ofthe lever F moving freely therein, the shank or chuck B, the cutter C, with its beveled edge, the throat-plate D, the lever F, the fulcrum K, the guide H, and the gage I, as and for the purposes substantially as described.

In testimony `whereof I affix my signature in presence of two witnesses.

FJDVAPVD ENGLAND.

Vitncsses:

A. F. RUDOLPH, F. W. DEWEY. 

